Home / 18,631.76-27,955.11-6,786.36

Finding the Fourth Proportional to 18,631.76, 27,955.11 and 6,786.36

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Solution

The fourth proportional to 18,631.76, 27,955.11 and 6,786.36 is: 10,182.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,631.76 : 27,955.11 = 6,786.36 : x
  2. Step 2: Convert to fraction form
    18,631.76/27,955.11 = 6,786.36/x
  3. Step 3: Cross multiply
    18,631.76x = 27,955.11 × 6,786.36
  4. Step 4: Simplify right side
    18,631.76x = 189,713,440.30
  5. Step 5: Solve for x
    x = 189,713,440.30/18,631.76
  6. Step 6: Final answer
    x = 10,182.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.